/Engine/Source/Runtime/Core/Public/GenericPlatform/GenericPlatformMisc.h
Return the engine and project directory based from the executable. This function would return different results than EngineDir and Project dir if for example -basedir is set on cmd line and/or pak files are used
static bool GetEngineAndProjectAbsoluteDirsFromExecutable ( [FString](API\Runtime\Core\Containers\FString) & OutProjectDir, [FString](API\Runtime\Core\Containers\FString) & OutEngineDir )